Anggun Pribadi Utama1 | Maryono Dwi Wibowo2 | Urip Murtedjo3 Abstract Ameloblastoma is an odontogenic epithelial neoplasm of the mandible originating from the undifferentiated enamel layer. The incidence is 0.6 per 1,000,000 populations. Patients who have undergone mandibular resection surgical treatment experience physiological changes, especially mastication disorders. The purpose of this study to know the difference between the masticatory status of ameloblastoma patients after mandibular segmental resection with LC type defects who have undergone mandibular reconstruction with Plate and Kirschner wire performed at the Head Neck Surgery. This research was analytic observational in a cross sectional design. The sample of this study was 40 patients who have undergone reconstruction with a Plate or Kirschner wire that met the inclusion and exclusion criteria. The results showed that the mean age in the reconstruction group with Kirschner wire was 38.25 ± 3.8 years, while in the Plate reconstruction group the mean age was 42.5 ± 4.3 years. Reviewed from the mastication status, in the K-Wire group who had good mastication status were 10 patients (50%) and poor mastication status were 10 patients (50%). In the Plate group, there were 16 patients (80%) with good mastication status and 4 patients (20%) with poor mastication status. Based on the data, there is a statistically significant differentiation between the status of the patient’s mastication which was reconstructed using a Plate compared with the status of the patient’s mastication by using K-Wire (p = 0.02). There are differences in mastication status in ameloblastoma patients after mandibular segmental resection with LC type defects who have undergone mandibular reconstruction with Plate and Kirschner wire where the status of post-reconstruction with Plate was better than patients undergoing reconstruction with Kirschner wire. Keywords: Mastication status, Mandibular resection, Plate, Kirschner Wire |